Browsing SINTEF Open by Author "Saai, Afaf"
Now showing items 1-6 of 6
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Adaptation of Laboratory tests for the assessment of wear resistance of drill-bit inserts for rotarypercussive drilling of hard rocks
Saai, Afaf; Bjørge, Ruben; Dahl, Filip Erik Bo; Antonov, Maksim; Kane, Pascal-Alexandre; Diop, Jean-Baptiste; Ojala, Niko (Peer reviewed; Journal article, 2020)The development of wear resistant materials for drill-bit inserts are of primary importance for efficient percussive drilling in hard abrasive rock. To speed up the development of enhanced wear resistance materials, the ... -
Assessment of advanced Taylor models, the Taylor factor and yield-surface exponent for FCC metals
Zhang, Kai; Holmedal, Bjørn; Manik, Tomas; Saai, Afaf (Journal article; Peer reviewed, 2019)High-resolution crystal plasticity-finite element method (CPFEM) simulations are performed to provide new reference values of the Taylor factor M and the isotropic yield surface exponent for high stacking fault energy ... -
Coupled fluid-solid modelling of the valve dynamics in reciprocating compressors
Ervik, Åsmund; Saai, Afaf; Berstad, Torodd; Meyer, Ole; Tsuji, Takuma; Oku, Tatsuya; Hattori, Kazuhiro; Yamada, Kazuya; Delhaye, Virgile Roger; Nekså, Petter (Science et technique du froid;, Chapter; Peer reviewed, 2022)A novel method coupling computational fluid dynamics (CFD) and finite element method (FEM) was developed to account for the complex physics of the reciprocating compressor. The developed method is based on data exchange ... -
Multi-scale Modelling of Titanium Diboride Degradation Using Crystal Elasticity Model and Density Functional Theory
Saai, Afaf; Wang, Zhaohui; Pezzotta, Micol; Friis, Jesper; Ratvik, Arne Petter; Vullum, Per Erik (The Minerals, Metals & Materials Series;2367-1181, Peer reviewed; Journal article, 2018)Titanium diboride (TiB2) is regarded as the most promising material to be used as inert cathodes in the electrochemical reduction of alumina to aluminium metal. TiB2 is well known as a ceramic material with high strength ... -
Optimization approach of DED process to fulfil the requirements on material properties and component performance of waterjet impeller
Saai, Afaf; Arbo, Siri Marthe; Sørli, Sture Henning; Dybdahl, Cato; Nedreberg, Mette Lokna (Peer reviewed; Journal article, 2024)Directed energy deposition (DED) processes have a great potential for ship building industry to reduce the lead time of ship part supply. However, ship parts such as propellers and impellers have critical requirements on ... -
Optimization of Laser Metal Deposition Process for 2205 Duplex Stainless Steel
Arbo, Siri Marthe; Saai, Afaf; Sørli, Sture; Dybdahl, Cato; Onsøien, Morten Ingar; Nedreberg, Mette (Peer reviewed; Journal article, 2022)This work aims to optimize the process parameters for laser based DED manufacturing of a water jet impeller with critical requirements to material and mechanical properties. The concerned material is 2205 duplex stainless ...